/* -------------------------------------------------------------------------
 *
 * win32error.c
 *	  Map win32 error codes to errno values
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 *
 * IDENTIFICATION
 *	  src/port/win32error.c
 *
 * -------------------------------------------------------------------------
 */

#ifndef FRONTEND
#include "postgres.h"
#include "knl/knl_variable.h"
#else
#include "postgres_fe.h"
#endif

static const struct {
    DWORD winerr;
    int doserr;
} doserrors[] = {
    {ERROR_INVALID_FUNCTION, EINVAL},
    {ERROR_FILE_NOT_FOUND, ENOENT},
    {ERROR_PATH_NOT_FOUND, ENOENT},
    {ERROR_TOO_MANY_OPEN_FILES, EMFILE},
    {ERROR_ACCESS_DENIED, EACCES},
    {ERROR_INVALID_HANDLE, EBADF},
    {ERROR_ARENA_TRASHED, ENOMEM},
    {ERROR_NOT_ENOUGH_MEMORY, ENOMEM},
    {ERROR_INVALID_BLOCK, ENOMEM},
    {ERROR_BAD_ENVIRONMENT, E2BIG},
    {ERROR_BAD_FORMAT, ENOEXEC},
    {ERROR_INVALID_ACCESS, EINVAL},
    {ERROR_INVALID_DATA, EINVAL},
    {ERROR_INVALID_DRIVE, ENOENT},
    {ERROR_CURRENT_DIRECTORY, EACCES},
    {ERROR_NOT_SAME_DEVICE, EXDEV},
    {ERROR_NO_MORE_FILES, ENOENT},
    {ERROR_LOCK_VIOLATION, EACCES},
    {ERROR_SHARING_VIOLATION, EACCES},
    {ERROR_BAD_NETPATH, ENOENT},
    {ERROR_NETWORK_ACCESS_DENIED, EACCES},
    {ERROR_BAD_NET_NAME, ENOENT},
    {ERROR_FILE_EXISTS, EEXIST},
    {ERROR_CANNOT_MAKE, EACCES},
    {ERROR_FAIL_I24, EACCES},
    {ERROR_INVALID_PARAMETER, EINVAL},
    {ERROR_NO_PROC_SLOTS, EAGAIN},
    {ERROR_DRIVE_LOCKED, EACCES},
    {ERROR_BROKEN_PIPE, EPIPE},
    {ERROR_DISK_FULL, ENOSPC},
    {ERROR_INVALID_TARGET_HANDLE, EBADF},
    {ERROR_INVALID_HANDLE, EINVAL},
    {ERROR_WAIT_NO_CHILDREN, ECHILD},
    {ERROR_CHILD_NOT_COMPLETE, ECHILD},
    {ERROR_DIRECT_ACCESS_HANDLE, EBADF},
    {ERROR_NEGATIVE_SEEK, EINVAL},
    {ERROR_SEEK_ON_DEVICE, EACCES},
    {ERROR_DIR_NOT_EMPTY, ENOTEMPTY},
    {ERROR_NOT_LOCKED, EACCES},
    {ERROR_BAD_PATHNAME, ENOENT},
    {ERROR_MAX_THRDS_REACHED, EAGAIN},
    {ERROR_LOCK_FAILED, EACCES},
    {ERROR_ALREADY_EXISTS, EEXIST},
    {ERROR_FILENAME_EXCED_RANGE, ENOENT},
    {ERROR_NESTING_NOT_ALLOWED, EAGAIN},
    {ERROR_NOT_ENOUGH_QUOTA, ENOMEM}
};

void _dosmaperr(unsigned long e)
{
    int i;

    if (e == 0) {
        errno = 0;
        return;
    }

    for (i = 0; i < lengthof(doserrors); i++) {
        if (doserrors[i].winerr == e) {
            errno = doserrors[i].doserr;
#ifndef FRONTEND
            ereport(DEBUG5, (errmsg_internal("mapped win32 error code %lu to %d", e, errno)));
#elif FRONTEND_DEBUG
            fprintf(stderr, _("mapped win32 error code %lu to %d"), e, errno);
#endif
            return;
        }
    }

#ifndef FRONTEND
    ereport(LOG, (errmsg_internal("unrecognized win32 error code: %lu", e)));
#else
    fprintf(stderr, _("unrecognized win32 error code: %lu"), e);
#endif

    errno = EINVAL;
    return;
}
